Answers

Subtract 90/60 from 7/63

1^st number: 7/63, 2^nd number: 1 30/60

7/63 - 90/60 is -25/18.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 60 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 63 × 20 = 1260,
   7/63 = 7 × 20/63 × 20 = 140/1260
3. Likewise, for the 2nd fraction, since 60 × 21 = 1260,
   90/60 = 90 × 21/60 × 21 = 1890/1260
4. Subtract the two like fractions:
   140/1260 - 1890/1260 = 140 - 1890/1260 = -1750/1260
5. After reducing the fraction, the answer is -25/18

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ¹⁴/₆₃-⁹⁰/₆₀ ²¹/₆₃-⁹⁰/₆₀ ³⁵/₆₃-⁹⁰/₆₀ ⁴⁹/₆₃-⁹⁰/₆₀

Subtract Fractions Calculator